org.apache.openjpa.persistence.query.BinaryOperatorExpression Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.openjpa.persistence.query;
/**
* An expression resulting from a binary operation on two expressions.
*
* @author Pinaki Poddar
*
*/
public class BinaryOperatorExpression extends ExpressionImpl {
private static final long serialVersionUID = 1L;
protected final Expression _e1;
protected final Expression _e2;
protected final BinaryFunctionalOperator _op;
public BinaryOperatorExpression(Expression e1, BinaryFunctionalOperator op,
Expression e2) {
_e1 = e1;
_e2 = e2;
_op = op;
}
public Expression getOperand1() {
return _e1;
}
public Expression getOperand2() {
return _e2;
}
public BinaryFunctionalOperator getOperator() {
return _op;
}
@Override
public String asExpression(AliasContext ctx) {
return ((Visitable)_e1).asExpression(ctx)
+ _op
+ ((Visitable)_e2).asExpression(ctx);
}
@Override
public String asProjection(AliasContext ctx) {
return ((Visitable)_e1).asProjection(ctx)
+ _op
+ (((Visitable)_e2).asProjection(ctx))
+ (ctx.hasAlias(this) ? " as " + ctx.getAlias(this) : "");
}
}